Gear-generator.



E. J. LEES. GEAR GENERATOR.

APPLICATION FILED MAR 25, 1912 Patented Dec. 23, 1913 Cleveland, county of Cuyahoga,

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ERNEST J. LEES, 0F CLEVELAND, OHIO, ASSIGNOR TO THELFES-BRADNER COMPANY,

OF CLEVELAND, OHIO, A CORPORATION OF OHIO;

GEAR-GENERATOR.

Specification of Letters Patent.

PatentedDec. 23, 1913.

Original application filed August 6, 1909, Serial No. 511,497. Divided and this application filed {March 25,

1912. Serial No. 685,952.

To all whom it may concern Be it known that I, ERNEST J. Lane, a citizen of the United States, resident of and State of Ohio, have invented a new and useful Improvement in Gear-Generators, of whlch the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to dlstinguish it from other inventions. Y

My invention relates, in a gear generating machine, to means for adjusting the workcarrying mandrel, and hence the work, with reference to the work-rotating spindle, the object of the invention beingto obtain such adjustment, in an efficient, exact and simple manner. I

This application constitutes a division of my prior application, Serial No. 511,497, filed Aug. 6, 1909.

The said invention consists of means hereinafter'fully described and particularly set forth in the claims. i

The annexed drawing and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of various mechanical forms in which the principle of my invention may be applied.

' In said annexed drawing :Figure 1 is a vertical fragmentar section of a gear generating machine ta en upon the axis of the work-rotating spindle. Fig. 2 is a fragmentary end elevation of such work-rotating spindle. Fig. 3 is a section of the parts shown in Fig. 2, taken upon the plane in dicated by line IIIIII 1n Fig. 2. Fig. 4 is a fragmentary section of the parts shown in Fig. 2, taken upon'the plane indicated by line IV-IV in Fig. 2.

The work-rotating spindlev C consists mainly of an outer hollow spindle C, Fig; 1, and an inner spindle C capable of a justment, as will be hereinafter described, within the outer spindle. The inner spindle is provided with a taper bore a for receiving'a mandrel or the like, as will be readily understood. The inner end of the inner spindle C is formed or provided with a toothed flange 0, Figs. 2, 3 and 4, and ad jacent to this flange and mounted upon a bearing o formed upon the outer spindle C, is a. ring a. This ring is provided with slots through which pass bolts 0 pr0- flange 0 formed upon the outer end of the outer spindle C. It will therefore be seen that the ring may be secured to or released from the outer spindle. The flange c is provided with a depression a", in which is seated a cam 0 fixed to a stem 0 mounted ,in the ring 0 as shown in Figs. 2 and 3. The outer end of the stem 0 is squared, so that it may be rotated by means of a wrench. This construction therefore permits the ring to be adjusted angularly by any small frac tion of the circumference, as will be understood. Upon the outer face of the ring is formed a slotted lug o, in which is seated a removable dog 0 one slotc bein formed so as to pass transversely'with relation .to the spindles axis, and the other slot 0" being made parallel thereto. The dog 0 consists of a block a, which is seated in the slot 0', and is provided with a tooth 0, adapted to the teeth on the outer end of the inner a, which is seated in the slot 0, by means of which the dog may be secured in its seat. The number of notch s provided in the" flange 0 maybe any nulnber required, but" is usually made 48 in number. When during the operation, it is desired to change the position of the inner'spindle, andtherefore the position of the work rotatabl win; reference to the outer spindle, the 0g 0 is loosened and lifted out of engagement withthe notches. The inner spindlev may then be rotated throu hout any desired angle, as will be readily understood, and then re-secured to the outer spindle by means of said dog. When, however, it is found desirable to change the position of the inner spindle with reference to the outer spindle by an are smaller than the pitch of the notches, the dog 0* is left in engagement with the particular notch in which it is secured, the nuts and bolts 0 and the cam c rotated so as to rotate the ring a and therefore the inner spindle, through the desired arc. The desired result is therefore obtained in this manner.

Having fully described my invention, what I claim and desire to secure by Letters Patent is 1. In a gear-generating machine, a workvided with suitable nuts threaded into a engage any one of the notches formed by spindle.--- This dog is mounted upon a screw rotating spindle comprising the combination of an inner spindle to which the work may be directly secured; an outer spindle mounted co-axially with said inner spindle, and capable of adjustment about its axis and with reference to the latter; and a member intermediate of said two spindles securable to each, and adjustable with reference -t one of same while fixed to the other.

2. In a gear-generating machine, a workrotating spindle comprising the combination said latter member, and adapted to enga e said notches; and means for rotatively a justing said intermediate member upon said outer spindle.

3. In a gear-generating machine, a workr'otating spindle comprising the combination of an inner spindle to which the work may be directly secured; an outer spindle mounted co-axially with said inner spindle and capable of rotation relative thereto; a member intermediate of said two spindles; one of said spindlesbeing provided with a plurality of notches arranged circumferentially with reference to its axis; removable means mounted upon said intermediate member and adapted to engage said notches so as to fix the inner and outer spindles relatively to each other; and means for adjusting said intermediate member rotatively upon one of said spindles.

4-. In a gear-generating machine, a w'orkrotating spindle comprising the combination of an inner spindle to which the work may be secured; an outer spindle mounted c0- axially with said inner spindle and rotatable upon the latter; the inner spindle being pro- A vided with a plurality of notches arranged circumferentially with reference to its axis;

a rin secured to said outer spindle adjacent to said notches; a removable dog seated in said ring and adapted to engage said notches; means for fixedly securing said ring to said outer spindle or releasing same therefrom; said outer spindle being provided with a recess; and a cam mounted in said ring engagingsaid recess.

Signed by me, this 20th day of March,

' ERNEST J. LEES. Attested by HERMAN EISELE, B. M. HARRIS.

(3013MB of. this patent may be obtained for five cents each, by addressing the Commissioner of 'ilatents,

Waehingtonflfi). t3. 

